Okay so it's actually Picking Lists they are having a problem with. They normally just click Print and it goes to their default printer. On occasion they want to print to another printer and so they go to setup and change to another printer. The next time they go to print a Picking List for another customer they just click print assuming it will print on their default printer but it doesn't. They have to go to setup again and manually change it back to their default printer.

The workstation options remain unchanged as "default printer" for Picking List.